Petunia plant named ‘MP221’

ABSTRACT

A new and distinct cultivar of  Petunia  plant named ‘MP221’, characterized by its compact, low mounding and outwardly spreading plant habit; freely branching and vigorous growth habit; numerous small light purple-colored flowers; and good garden performance.

Botanical designation: Petunia×hybrida.

Cultivar denomination: ‘MP221’.

BACKGROUND OF THE INVENTION

The present Invention relates to a new and distinct cultivar of Petunia plant, botanically known as Petunia×hybrida, and hereinafter referred to by the cultivar name MP221.

The new Petunia is a product of a planned breeding program conducted by the Inventor in Cobbitty, New South Wales, Australia. The objective of the breeding program is to create outwardly spreading Petunias with numerous small flowers with attractive flower colors.

The new Petunia originated from a cross-pollination made by the Inventor in December, 2001 of a proprietary Petunia×hybrida selection identified as X01.169.1, not patented, as the female, or seed parent, with the Petunia×hybrida cultivar X00-155-1, disclosed in U.S. Plant Pat. No. 15,456, as the male, or pollen parent. The new Petunia was selected as a single plant from the resulting progeny of the cross-pollination by the Inventor in a controlled environment in Cobbitty, New South Wales, Australia in October, 2002.

Asexual reproduction of the new cultivar by vegetative cuttings in Cobbity, New South Wales, Australia since October, 2002, has shown that the unique features of this new Petunia are stable and reproduced true to type in successive generations.

SUMMARY OF THE INVENTION

Plants of the cultivar MP221 have not been observed under all possible environmental conditions. The phenotype may vary somewhat with variations in environment such as temperature and light intensity without, however, any variance in genotype.

The following traits have been repeatedly observed and are determined to be the unique characteristics of ‘MP221’. These characteristics in combination distinguish ‘MP221’ as a new and distinct cultivar:

-   -   1. Compact, low mounding and outwardly spreading plant habit.     -   2. Freely branching and vigorous growth habit.     -   3. Numerous small light purple-colored flowers.     -   4. Good garden performance.

Plants of the new Petunia differ primarily from plants of the parents in petal coloration as plants of the female parent selection have pure white-colored petals and plants of the male parent have lavender-colored flowers.

Plants of the new Petunia can be compared to plants of the cultivar MP-21, disclosed in U.S. Plant Pat. No. 12,818. In side-by-side comparisons conducted in Cobbitty, New South Wales, Australia, plants of the new Petunia differed primarily from plants of the cultivar MP-21 in petal coloration as plants of the cultivar MP-21 had pure white-colored petals.

BRIEF DESCRIPTION OF THE PHOTOGRAPHS

The accompanying colored photographs illustrate the overall appearance of the new cultivar, showing the colors as true as it is reasonably possible to obtain in colored reproductions of this type. Colors in the photographs may differ slightly from the color values cited in the detailed botanical description which accurately describe the colors of the new Petunia.

The photograph at the bottom of the sheet comprises a side perspective view of a typical flowering plant of ‘MP221’ grown in a container.

The photograph at the top of the sheet comprises a close-up view of typical leaves and flowers of ‘MP221’.

DETAILED BOTANICAL DESCRIPTION

The aforementioned photographs and following observations and measurements describe plants grown in Lompoc, Calif., under commercial practice during the winter and early spring in a polycarbonate-covered greenhouse with day temperatures ranging from 21 to 24° C., night temperatures ranging from 16 to 18° C., and light levels ranging from 5,000 to 9,000 foot candles. Plants were grown for about 14 weeks with one plant per 14-cm container. Plants were pinched once about three weeks after planting. In the following description, color references are made to The Royal Horticultural Society Colour Chart, 1995 Edition, except where general terms of ordinary dictionary significance are used.

-   Botanical classification: Petunia×hybrida cultivar MP221. -   Parentage:     -   -   Female parent.—Proprietary Petunia×hybrida selection             identified as X01.169.1, not patented.         -   Male parent.—Petunia×hybrida cultivar X00-155-1, disclosed             in U.S. Plant Pat. No. 15,456. -   Propagation:     -   -   Type cutting.—Vegetative cuttings.         -   Time to initiate roots.—About two weeks at 22° C.         -   Time to produce a rooted young plant.—About three to four             weeks at 22° C.         -   Root description.—Fine, fibrous; white in color.         -   Rooting habit.—Freely branching, dense. -   Plant description:     -   -   Form.—Annual flowering plant; indeterminate; initially             upright, then low mounding and outwardly spreading; compact.             Vigorous growth habit. Freely basal branching habit with             about five main lateral branches per plant with lateral             branches potentially forming at every node.         -   Usage.—Appropriate for hanging baskets, window boxes, patio             containers and landscape applications.         -   Plant height.—About 12 cm.         -   Plant diameter.—About 45 cm.         -   Lateral branches.—Length: About 29 cm. Diameter: About 3 mm.             Internode length: About 2 cm. Texture: Pubescent. Color:             144A.         -   Foliage description.—Arrangement, before flowering:             Alternate, simple. Arrangement, when flowering: Opposite,             simple. Length: About 2.7 cm. Width: About 1.5 cm. Shape:             Elliptical. Apex: Broadly acute. Base: Attenuate. Margin:             Entire. Texture, upper and lower surfaces: Slightly             glandular, viscid; pubescent. Venation pattern: Pinnate,             arcuate. Color: Developing foliage, upper surface: 137A.             Developing foliage, lower surface: 146B. Fully expanded             foliage, upper surface: 146A. Fully expanded foliage, lower             surface: 146B. Venation, upper and lower surfaces: 146B.             Petiole length: About 7 mm. Petiole diameter: About 2 mm.             Petiole texture, upper and lower surfaces: Slightly             pubescent. Petiole color, upper and lower surfaces: 146B. -   Flower description:     -   -   Flower type and habit.—Small salverform flowers; flowers             face upward or outward; single, axillary. Freely flowering,             typically about twelve open flowers per lateral stem.         -   Natural flowering season.—Long day responsive; spring until             frost in the autumn; flowering continuous during the             flowering period.         -   Flower longevity on the plant.—About four to five days;             flowers persistent.         -   Fragrance.—Floral, sweet.         -   Flower size.—Diameter: About 3.4 cm. Tube length: About             2.4 cm. Throat diameter, distal end: About 8 mm. Tube             diameter, proximal end: About 3 mm.         -   Flower buds.—Length: About 2.8 cm. Diameter: About 6 mm.             Shape: Elongated oblong with ruffled apices. Color: 145C.         -   Corolla.—Arrangement/appearance: Single whorl of five             petals, fused into flared trumpet with distinct clefts             between petal lobes. Petal lobe length: About 1.2 cm. Petal             lobe width: About 1.5 cm. Petal shape: Fan-shaped. Petal             apex: Rounded. Petal margin: Entire. Petal texture, upper             and lower surfaces: Smooth, satiny. Color: Petal, when             opening, upper surface: 76B; towards the margins, 75A.             Petal, when opening, lower surface: 76D. Petal, fully             opened, upper surface: 155D overlain with 76B; towards the             margins, 75A; color becoming more white, close to 155D, with             development. Petal, fully opened, lower surface: 155D.             Flower throat (inside): 83C. Flower tube (outside): Towards             the base, 79B; towards the petal lobes, 79D. Venation, upper             petal surface: 157C. Venation, lower petal surface: 195A.             Venation, throat: 79B. Venation, tube: 79B.         -   Sepals.—Arrangement/appearance: Single whorl of five sepals             fused at base, star-shaped; slightly recurved. Length: About             9 mm. Width: About 2.5 mm. Shape: Linear. Apex: Rounded.             Margin: Entire. Texture, upper and lower surfaces:             Pubescent. Color, upper and lower surfaces: 146A.         -   Peduncles.—Length: About 2 cm. Width: About 1.25 mm. Angle:             Almost 90° to the stem. Strength: Strong. Texture:             Pubescent. Color: 144A.         -   Reproductive organs.—Stamens: Quantity/arrangement: Five per             flower; stamens adnate to corolla tube. Anther shape: Ovoid.             Anther length: About 2 mm. Anther color: 91A. Pollen amount:             Scarce. Pollen color: 202B. Pistils: Quantity: One per             flower. Pistil length: About 2 cm. Stigma shape: Rounded.             Stigma color: 147A. Style length: About 1.6 cm. Style color:             145C. Ovary color: 144A.         -   Fruit/seed.—Fruit and seed production has not been observed. -   Disease/pest resistance: Plants of the new Petunia have not been     noted to be resistant to pathogens and pests common to Petunia. -   Garden performance: Plants of the new Petunia have been observed to     have good garden performance and to be tolerant to rain, wind and     temperatures ranging from −5 to 40° C. 

1. A new and distinct cultivar of Petunia plant named ‘MP221’, as illustrated and described. 